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Polypropylene is a semi-crystalline thermoplastic with high rigidity and very good chemical resistance. Characteristic for polypropylene is a CH3 side-group in the monomer structural unit, which can be aligned in various spatial positions during polymerisation.
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Homopolymer Polypropylene |
| Homopolymer Polypropylene is harder, possesses excellent resistance to organic solvents and degreasing agent as well as electrolytic attack. Compared to low or high-density polyethylene, it has lower impact strength but superior working temperature and tensile strength. Copolymer Polypropylene is harder than HDPE and likely to show good properties in lower temperatures. Copolymers have better impact strength, are good at lower temperatures than homopolymer & exhibit slight fall in other properties. Copolymer sheets are suitable for vacuum/ thermo-forming and mechanical fabrications. Main properties
Sliding properties PP-H is subject to strong sliding abrasion and is thus not suitable for use in sliding applications. Chemical resistance PP-H is resistant to acids, alkaline solutions, salts and salt solutions, alcohols, oils, fats, waxes and many solvents. Aromatics and halogenated hydrocarbons cause swelling. PP-H is not resistant to strong oxidising materials (e.g. nitric acid, chromic acid or halogens) and there is a danger of stress corrosion cracking. Applications:
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Mr. Girish Dhawan
(Proprietor)
No. 170, Gali Bandook Wali, Ajmeri Gate
New Delhi,
Delhi -
110 006,
India
Telephone:+(91)-(11)-23215389/ 32972567
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